JP3362794B2 - Gantry type mobile drilling machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gantry type mobile excavating machine for excavating tunnels having various sectional shapes.

[0002]

BACKGROUND OF THE INVENTION The best known method of forming large tunnels in rock is the drilling and blasting method, which uses explosives with many drawbacks.
One of its drawbacks is that it is very dangerous.
In this way without the use of dangerous explosives in Tsu by the mechanical means,
There has long been a desire for a mobile excavating machine that can effectively form a large tunnel in bedrock.

There are several prior patents relating to excavating machines capable of rotating a cutter head about a horizontal axis and swinging it around a vertical axis across a work surface. A typical example thereof is US Pat. 2,77
6,824; Bergmann U.S. Pat. 3,3
07,879; Frenyo U.S. Pat. 3,92
9,378; Sigott U.S. Pat. 4,11
1,488; Marten, U.S. Pat. 4,23
0,372. All of these prior patents disclose machines that utilize tooth cutters rather than disc cutters.

Sugden US Pat. 4,54
No. 8 442, a mobile excavating machine is disclosed having a wheeled cutter head assembly and a swing boom assembly in front of the pitch boom assembly . Sugden
U.S. Patent No. No. 3,965,995 discloses a machine having a rotatable cutter wheel provided at the lower end of a cylindrical support and capable of forming a large diameter vertical hole. The cutter wheel is rotatable about a cylindrical support on an axis perpendicular to the axis of rotation of the cutter wheel. To form the vertical hole, the rotating cutter wheel is advanced towards the ground as the first cut. The cutter wheel then rotates on the tubular support to cut across the initial cutting section. This operation is repeated until holes are formed.

Bechem US Pat. 4,04
The 5,088, slot holes carried in order to perform the swing motion in a horizontal angle of about 120 degrees, Heddoka jitter, in order to accurately drive the rotatable disc cutter, so about a vertical shaft A drilling machine characterized by a swinging motion of a drill head is disclosed. Multiple disc mosquito jitter is inclined so as to spread. Mosquito movement of jitter is not considered in addition to the swinging movement in the horizontal direction.

Stoltefuss et al., US Pat.
The 3,873,157, vertical and tunnel machine i.e. excavating machine equipped with a mosquito jitter apparatus that is rotatably provided at the forward end of the pivoted boom in the horizontal direction is disclosed. Ca jitter configuration has two narrow wheels or rollers carrying pick Joka jitter. US Patent N of Spurgeon
o. The 4,312,541, Torenchika jitter machine is disclosed that comprises the body assembly and the cutter wheel assemblies. The coal drilling machine moves the plurality of teeth of the disc mosquito jitter, about a horizontal direction substantially perpendicular axis to facilitate carrying the conveyor. A cylinder is provided transversely to the body assembly and carries a pair of pistons extending axially from each end of the cylinder. Grip pads are provided on each piston to resist the sidewalls of the trench. Each piston has an end face with an inner sidewall in the cylinder.
The piston consists of a pressure chamber that presses the pad against the trench. The body and its cylinder are free to move laterally with respect to the piston when a force is exerted on the cylinder. Between the piston and the body assembly is provided extendable arms, progressively cutting the trench pushing forward the cut wheel body assembly thereto by Tsu good. A steering assembly is provided for moving the body assembly laterally with respect to the piston and about the central axis of the cut wheel.

A coal excavating machine having a shallow conical cutter head rotatably provided at the front end of an elongated boom is known as Wh.
Arton U.S. Pat. 3, 726, 562. Although not described in detail, the cutter head appears to have a series of picks as cutting elements. It is not clear from the description of the patent how the cutter head rotates, and the specific correlation between the rotation speed of the cutter head and the inclination speed of the cutter head is not clear. The cutter head can be tilted both horizontally and vertically.

[0008] In this way, or move the cutter wheel and the boom is drawing a trajectory to the mobile drilling machine, mobile drilling such as those having a cutter wheel carried by Tsu by the boom assembly or across it as an option Machines are desired. Unlike prior art excavating machines having a tilt boom assembly or a pitch boom assembly, the above arrangement provides a low height-to-width ratio or a height-to-width ratio approximately equal to one, or As a result, tunnel cutting can be performed without a roof crown as an option.

There is also a need for a mobile excavating machine having a cutter head that can be operated such that the axis of rotation of the cutter head is substantially parallel to the tunneling surface so that the lower corners of the tunnel can be cut more efficiently. Mobile drilling machines are mostly also desired mobile excavating machine described above configuration with the configured gantry frame so as not to components therein. In this Tsu by the gantry structure, workers and drilling support vehicle it is possible to work such as sediment collected during the drilling under its mobile drilling machine.

[0010]

A gantry-type mobile excavating machine according to the present invention has a cutter wheel provided with a plurality of roller cutter units on its outer circumference. This cutter wheel is
It is rotated around a rotation axis that is almost parallel to the tunnel processing surface,
Further, it is driven almost at right angles to the traveling direction of the mobile excavator. That is, the cutter wheel is driven around a rotation axis that is substantially parallel to the tunnel processing surface and substantially perpendicular to the traveling direction of the mobile excavating machine. Cutter wheel is carried Tsu by the boom assembly, that is, substantially parallel to the tunnel working surface and the cutter wheel rotation axis, carried around a substantially vertical axis and the traveling direction of the mobile drilling machines.

Mounting part and mounting consisting of boom yoke
A rotating assembly having a rotatable section supports a boom assembly and a cutter wheel. The rotating assembly rotates the cutter wheel and boom assembly about an axis that is substantially perpendicular to the tunneling surface and the axis of rotation of the cutter wheel and substantially parallel to the direction of travel of the mobile drilling machine.

[0012] Extrusion means <br/> consisting scan last cylinder or the like, the cutter wheel, the boom assembly and rotating assembly 1
As one unit , push forward against the cross assembly and frame .

[0013]

According to the above-mentioned structure, the mobile excavating machine has four degrees of freedom regarding the operation of the cutter wheel unit. In particular, the four degrees of freedom mean (1) the cutter wheel rotates about an axis that is parallel to the tunneling surface and perpendicular to the traveling direction of the mobile excavator; (2) tunneling surface. Parallel to the direction of travel of the mobile excavator
The boom assembly pivots about a vertical axis against the direction; (3) perpendicular to the tunnel working face and the axis of rotation of the cutter wheel, rotating parallel to the traveling direction of the mobile excavating machine Rotation of the rotating assembly about an axis;
(4) The cutter wheel and boom assembly ram along an axis that is perpendicular to the tunneling surface and the axis of rotation of the cutter wheel and parallel to the direction of travel of the mobile excavator. In this way, a radial movement of the cutter wheel approximately parallel to the tunneling surface and perpendicular to the direction of travel of the mobile excavator is possible in any desired direction.

[0014] In a preferred embodiment, the mobile excavating machine comprises a transverse assembly supported on the frame, the
The traverse assembly consists of a traverse housing slidable on the traverse to effect traverse movement of the rotating assembly relative to the cutter wheel, boom assembly and frame. This cross
The assembly has five cutter wheel movements as a result of the present invention.
Have a second degree of freedom.

[0015] frame for supporting the transverse assembly preferably gantry frame is good consisting of first and second gantry side frame parts joined Tsu by the gantry top frame portion. The gantry frame has a space below the mobile excavating machine, where slag and other excavated debris can be cleared and workers and associated machines can enter and leave.

[0016] The hold means are di turbocharger Tsu on the gantry frame
Key, and a pivotably mounted gripping arms, the gripping shoe over及 beauty transverse passage and grip shoe over the connected gripping cylinder both in on the grip arm with respect to the gantry frame. The holding means may Tsu by the extending the di <br/> catcher Tsu key and the grip cylinder, the machine during drilling fixed in the tunnel, also in Tsu by the retracting the jack key and the grip cylinder, The machine can be moved and repositioned for the next tunnel excavation process.

The track, which constitutes the vehicle on the gantry frame, is capable of carrying and repositioning mobile excavators.

[0018]

1-7 show a preferred embodiment of the invention, while FIGS. 1 and 2 show a mobile excavating machine 10 including a cutter wheel 12. The term "mobile excavator" means
It includes machines used for all mining, tunneling and excavation operations. The cutter wheel 12 has a horizontal / horizontal shaft drum 14, on which a plurality of disc cutters 16 and gauge cutters 18 are provided. Horizontal / horizontal axis drum 14 be rotatably connected to the boom 20, it is driven around the rotary shaft Tsu good <br/> to the drive motor 22 through a known drive train 24. As will be described below, the rotation axis is substantially parallel to the tunnel processing surface W and is substantially perpendicular to the line of the path L of the mobile excavating machine 10.

The cutter wheel 12 forms a tunnel working surface W by goes forward in the traveling direction, and is controlled Tsu by the lateral movement mechanism for selectively swinging movement to the left and right as described in detail below. The cutter wheel 12 can rotate clockwise or counterclockwise around the cutter wheel rotating mechanism, as described in detail below, which causes the cutter wheel 12 to orbit. This rotating mechanism has an axis substantially parallel to the traveling direction L of the mobile excavating machine 10 and an axis substantially perpendicular to the rotating axis of the cutter wheel 12 and the tunnel processing surface W. Further, the boom 20 pivots about an axis and moves from the axis of rotation of the cutter wheel 12 to the mobile excavating machine 1.
The orbit radius of the cutter wheel 12 measured in the path direction L of 0 is changed. The rotation axis of the boom 20 is substantially perpendicular to the line of the path L of the mobile excavating machine 10 and is substantially parallel to the tunnel processing surface W and the rotation axis of the cutter wheel 12 regardless of the position of the cutter wheel 12. The horizontal swing motion of the cutter wheel 12 and the cutter wheel 12 described above
In combination with the orbit movement by the variable orbit radius of
It is possible to perform horizontal cutting, vertical cutting, arcuate cutting, angled cutting, etc. of the cutter wheel 12.

The member for changing the track radius of the cutter wheel 12 from the line of the path L of the mobile excavating machine 10 is shown in FIG.
Includes boom 20 as shown in FIGS. 2 and 6. The boom 20 is attached by the clevis 28 to the boom yoke 2 so that the boom 20 can rotate about the axis of the clevis 28.
It is attached to 6. This U link 28 is substantially perpendicular to the line of course L of mobile drilling machines 10, and is substantially parallel to the rotational axis of the tunnel processing surface W Oyobi and cutter wheel 12. The boom cylinder 30 is fixed to the boom 20 by a boom cylinder U-link 32. Boom cylinder 30 is also in Tsu by the telescopic adjustment of the boom cylinder 30 by changing the orbital radius of the cutter wheel 12 so as to allow planar moving, it mounted on the boom yoke 26. As described above, the radius of the orbit of the cutter wheel 12 depends on the rotation axis of the cutter wheel 12 and the boom yoke 2.
6 is the distance from the axis of rotation (detailed below). The mechanism for orbiting the cutter wheel 12 with respect to the body of the mobile excavating machine 10 will be described in detail below. Figure 1 again
Referring to 2 and 6, the boom support shaft 34 has a distal boom yoke 26 described above, for supporting the boom 20 and the cutter wheel 12. The boom yoke 26 is rotatable around the boom support shaft 34 and above the boom support bearing 36 (FIG. 6). The rotation axis of the boom yoke 26 is substantially perpendicular to the tunnel processing surface W, the rotation axis of the boom 20 and the rotation axis of the cutter wheel 12, and substantially parallel to the line of the path L of the mobile excavating machine 10. The ring gear 38 is radially, that is, coaxial with the rotating shaft.
And is fixed to the boom yoke 26. The boom rotation motor 42 is attached to the flange 40 of the boom support shaft 34. The boom rotation motor 42 is used for the pinion gear 4 that meshes with the ring gear 38.
Including 4. In this way, when the boom rotation motor 42 drives the pinion gear 44, the ring gear 38 rotates. As such, the boom yoke 26 rotates about the boom support shaft 34 above the boom support bearing 36. Due to the rotation of the boom yoke 26, the boom 20 and the cutter wheel 1 are rotated clockwise or counterclockwise.
Two orbital motions occur.

In another embodiment of the invention (not shown), the boom support shaft 34 is the boom support shaft 3.
4 has an opening along the longitudinal axis. A drive shaft passing through the opening is connected to the boom yoke 26. The drive motor rotates its drive shaft and causes the boom yoke 2
6. Rotate the boom 20 and the cutter wheel 12.

1, 2, 4, and 5 for the configuration of selective lateral movement of the cutter wheel 12 and boom 20.
Shows a transverse housing 46 located above the boom support shaft 34. Specifically, the transverse housing 46, the front shaft traverse housing 46a, a central transverse housing 46b and Komenshi catcher shifted transverse housing 4
6c is included. These three elements are Tsu Nodea shown for clarity, the transverse housing 46 is an integral of the components. The front shaft crossing housing 46 a is located above the boom support shaft 34, and the front main bushing 48 and the rear main bushing 50 are different from the crossing housing 46 with respect to the boom support shaft 34, the boom 20, and the boom support shaft 34.
A plunging relative movement in the longitudinal direction is performed between the cutter wheel 12 and the cutter wheel 12, as will be described later. The front shaft crossing housing 46a includes a front crossing passage 52 and the rear shaft crossing housing 46c includes a rear crossing passage 54. Front crossing 52
And rear transverse passage 54 is placed so that the longitudinal axis Ho Isuzu across the mobile excavating machine 10. As will be discussed in more detail below, when stable against the tunnel wall, the front and rear traverses 52, 54 slide the front shaft traversing housing 46a over the front traverse 52,
And, by sliding the rear shaft transverse housing 46c above the rear transverse passage 54, the transverse housing 46 is caused to move in a substantially horizontal plane.

A front right gripper cylinder 56a and a front left gripper cylinder 56b are fixed to the front crossing path 52. Since it contacts the tunnel wall, the front right gripper shoe 58a is attached to the end of the front right gripper cylinder 56a.
Is installed. Similarly, a front left gripper shoe 58b is attached to the front left gripper cylinder 56b for contacting the tunnel wall. Rear crossing 5
A rear right gripper cylinder 60a and a rear left gripper cylinder 60b are fixed in the inside of the cylinder 4. A rear right gripper shoe 62a is attached to the end of the rear right gripper cylinder 60a for contacting the tunnel wall. Similarly, since it contacts the tunnel wall, the rear left gripper shoe 62 is attached to the end of the rear left gripper cylinder 60b.
b is attached. Front right gripper cylinder 56
When a, the front left gripper cylinder 56b, the rear right gripper cylinder 60a and the rear left gripper cylinder 60b extend, the front right gripper shoe 58a, the front left gripper shoe 58b, the rear right gripper shoe 62a and the rear left gripper shoe 62b are attached to the tunnel wall. Fix it against. When the mobile excavating machine 10 is thus fixed to the tunnel wall surface, the transverse housing 46 can perform a horizontal plane movement with respect to the mobile excavating machine 10, and in particular, the front shaft transverse housing 46a is a front transverse passage. 52 is slidable above the rear shaft crossing housing 46.
c can slide above the rear crossing 54.

The horizontal planar movement of the transverse housing 46 performed above the front traverse 52 and the rear traverse 54 is
Caused by Tsu by the respective front cross screw 64 and the rear transverse screw 66. Front cross screw 64
Is screwed to the front sheet catcher shifted transverse housing 46a, and are disposed across the mobile excavating machine 10. Similarly,
Rear transverse screw 66 is screwed into Komenshi catcher shifted transverse housing 46c, and is disposed across the mobile excavating machine 10. Front traverse motor 68 and front traverse gear 7
0 rotates the front transverse screw 64, by a front transverse screw 64 and the front sheet catcher shifted transverse Ha c ing 46a is screwed, horizontal plane motion of the cross c c Managing 46 on the front transverse passage 5 2 (Transverse movement) is performed. Similarly, rear transverse gear 74 and the rear transverse motor 72 rotates the rear transverse screw 66, by rear transverse screw 66 and the Komenshi catcher shift cross c c Managing 46c is screwed, on the rear transverse passage 5 4 horizontal movement of the cross c c Managing 46 (transverse movement) is carried out. It will be appreciated that the roll motions of the mobile drilling machine 10 described above are optional.

Cutter wheel 1 of mobile excavating machine 10
2, the outer sleeve 7 shown in FIGS. 1 and 7 as a mechanism for moving the boom 20 and the boom support shaft 34 forward and backward.
8 and a plurality of plunging cylinders 76 each having an internal piston 80 will be described. The plunge cylinder 76 is an Ener in Butler, Wisconsin.
Model No. of the double-acting, hollow plunge hydraulic cylinder manufactured by Pac. RRH-10010 is preferred.
The stud 82 passes through the center of each plunge cylinder 76 and is secured to the outer sleeve 78 by a tightening means 84 such as a nut. Outer sleeve 78
End of stud 82 which is not attached to is threadedly secured to the front shaft cross c c Managing 46a. The studs 82 are attached to the boom support shaft 3
4 for movement relative to the stud 82 and the plunge cylinders 76 are slidably secured to the thrust plate 86 of the boom support sheet catcher shift 34. Therefore, the surface of the internal piston 80 of the plunger cylinder 76 near the thrust plate 86 is fixed to the thrust plate 86.

In terms of operation, the cutter wheel 1
To rush the 2 and the boom 20, the boom support shaft 34, the right switch catcher Nba A of plunger cylinders 76
By advancing the pressure at, the mobile excavator 10 is advanced. Internal piston 80 by the pressure increase gives an almost force parallel to the longitudinal axis of the mobile excavating machine 10 with respect to the thrust plate 86 of the boom support sheet catcher shift 34. Thus, the boom support sheet catcher shift 34 is pushed forward relative to the front sheet catcher shifted transverse housing 46a of the front main bushing 48 and the rear main bushing 50 on. In addition, the boom 20 and the cutter wheel 1
2 is also pushed forward. By the force exerted on the thrust plate 86 Tsu An internal piston 80, the front shaft traverse housing 46 the outer sleeve 78 is Tsu by the <br/> sheet catcher shifted 82
because it is secured to a, a boom support sheet catcher shift 34 moves relatively.

In order to stop the forward movement of the cutter wheel 12 and the boom 20 and retreat, the pressure inside the chamber A of the plunger cylinder 76 is reduced (and / or the pressure inside the chamber B of the plunger cylinder 76 is increased), and the internal piston Return 80 into outer sleeve 78. The return operation by the internal piston 80, since the inner piston 80 and the thrust plate 86 is fixed, a thrust plate 86 of the boom support sheet catcher off <br/> DOO 34 to the front sheet catcher shifted transverse housing 46a Pulled backwards. Thus, the boom support sheet catcher shift 34, along the front main bushing 48 and the rear main bushing 50 pushed rearward with respect to the front sheet catcher shifted transverse housing 46a. In this way, the cutter wheel 12 and the boom 20 stop their forward movement and retreat.

Next, the described frame support structure, retracted position fixed, mobile excavating machine 10 for subsequent tunneling of mobile excavating machine 10 for in Tsu by its frame support structure of the tunnel excavation, Also, it is possible to set the position of the mobile excavating machine 10 with respect to different excavation sites.
1 to 5, the mobile excavator 10 includes a right gantry frame 88a and a left gantry frame 88b.
Is equipped with. Each of the right gantry frame 88a and the left gantry frame 88b comprises a crawler beam 90 arranged substantially parallel to the longitudinal axis of the mobile excavating machine 10. Attached to each end of the crawler beam 90 is an upright support 92 which is mounted substantially perpendicular to the crawler beam 90. The right gantry frame 88a and the left gantry frame 88b are integrally configured by the cross beam 94. The end of the upright support 92 remote from the crawler beam 90 is provided with a frame corner 96. Frame corners 96 secure the front and rear crossways 52, 54 to the upright support 92.

Further, a synchronization chain 98 is provided between the frame corner 96 supporting the front crossing path 52 and the frame corner 96 supporting the rear crossing path 54.
The front cross screw 64 and the rear cross screw 66 are engaged with each other by a known sprocket so that they can rotate in synchronization with each other. The grip arm trunnion 100 is provided at the intersection of the upright support 92 and the crawler beam 90.
Are connected. Grip arm trunnion 100
Are pivotally attached to the grip arm 102 on both the right gantry frame 88a and the left gantry frame 88b. The grip arm 102 includes a front gripper shoe 58a, a front left gripper shoe 58b, a rear gripper shoe 62a, and a rear left gripper shoe 62b, a front right gripper cylinder 56a, and a front left gripper cylinder 5a.
The grip arm 102, the front right gripper shoe 58a, and the front left gripper shoe 58 are operated by the functions of 6b, the rear right gripper cylinder 60a, and the rear left gripper cylinder 60b.
b, the rear gripper shoe 62 and the rear left gripper shoe 62b are pivotally movable by the pin 103.
It is attached to Tsu. In this way, the gripping arms 102, front right grip shoe over 58a, front left gripper shoe 58b, rear right gripper shoe 60a,
And rear gripper shoe 60b to the mobile drilling machines 10 have pivoted outwardly, is fixed to the inner tunnel mobile drilling machine 10 during cutting it by Tsu good. The grip arm 102 can be axially supported inside the mobile excavating machine 10 during excavation.

The grip arm trunnion 100 straddles the screw jack 104 of the crawler beam 90. The screw jack 104 is North Caro
Charlotte Duff-Nort, Lina
on manufactured by Model No. A 2249 screw with worm gear is preferred. Screw jack 104 includes a Sukuryushi catcher shift 106 that terminates in a pad 108. Each of the screw jacks 104 is driven by a known hydraulic drive motor 110. When the screw jack 104 is in the retracted position, the mobile excavating machine 10 is parked on the endless track 112 provided near the inside of the right gantry frame 88a and the left gantry frame 88b. The endless track 112 is two endless tracks 11
The mobile drilling machine 10 Tsu by the second differential traction is a power track for conveniently maneuver. As is well known, differential traction is due to different track velocities of track 112 in the same or opposite directions.
As such, the track 112 is used to both transport and change the location of the mobile excavating machine 10 after a tunnel excavation stroke. Screw jack 10
When 4 is extended, the mobile drilling machine 10 stands up, no longer carrying the weight of the mobile drilling machine 10, and the mobile drilling machine 10 is supported by the screw jack 104 for easy drilling. .

A screw jack 10 provided in front of the right gantry frame 88a and the left gantry frame 88b.
Reference numeral 4 is a crushed piece blade support 114 for attaching the crushed piece blades 116 to the right gantry frame 88a and the left gantry frame 88b. The right gantry frame 88 described above in relation to the front and rear crossways 52 and 54.
It will be readily appreciated that the configuration of a and the left gantry frame 88b may be used to make a mobile drilling machine having a gantry configuration such that an inner portion 118 is formed below the mobile drilling machine 10. The inner portion 118 of the mobile excavator 10 is free of any components, allowing work by workers, trucks and other excavators. In particular, the inner portion 118 serves as a front opening through which crushed pieces pass and a rear opening through which workers and related machines are put in and out. Fragment blade 1 during collection of fragments
16 is Tsu suited to the inner portion 118, as shown in FIG. 2,
Bend on the inside, so that crushed pieces enters the inner portion 118 from the front opening of the mobile drilling machine 10, in the inner portion, in Tsu by the truck and workers for entry Tsu was crushed pieces in from the rear opening The crushed pieces are collected. Thereafter, the crushed pieces are discharged from the rear opening by a worker or a garbage truck. If the crushed piece curtain 130 is divided into a plurality of elongated strips arranged in the vertical direction, the crushed piece trolleys can be put in and taken out, and the crushed piece collection work by an operator can be facilitated.

Next, a crushed piece treatment and a constitution for giving power in the mobile excavating machine 10 will be described below with reference to FIGS. 1 to 3. In the figure, a retractable debris shield 120 is located behind the cutter head 12 but in the front portion of the mobile drilling machine 10. The shredder shield 120 has a flexible edge 122 that shields against the tunnel wall. Shattered piece shield 12
0 is connected to the scrubber duct 124, and this duct 1
24 is further connected to the scrubber 126. The scrubber 126 includes a rear duct 128 located in the rear portion of the mobile excavating machine 10. Crushed piece curtain 130
Encloses the inner portion 118 and is attached to the front portion of the mobile drilling machine 10 flush with the debris shield. The debris curtain 130 prevents debris and other particles produced by excavation from passing through the inner portion 118 and from entering an already excavated tunnel.

A rear platform 132 is located near the rear crossing 54 and is supported by rear platform struts 134. The rear platform 132 supports a hydraulic power unit 136, an electrical cabinet 138, a diesel generator 140 and an operating area 142. Next, the operation of the mobile excavating machine 10 will be described. Particularly, the mobile excavating machine 10 performs a tunnel process at a grip position in a tunnel, and a tunnel process or a grip state at a position for another tunnel process. Performs minecart movement in the absence. As mentioned above, tunnel excavation
It is achieved Tsu by the combination of the orbital motion and lateral motion by the variable orbital radius of the cutter wheel 12.

To describe a typical tunnel excavation cycle, first, the mobile excavating machine 10 carries the endless track 112 in contact with the ground to the rock surface to be excavated, and the screw jack 104 is retracted therein. Carry to the position.
The mobile excavating machine 10 is brought "on line" within the tunnel, i.e. on the center line of the tunnel. Next, the screw jack 104 is extended to move the mobile excavating machine 10 to a "predetermined height".
That is, lift from the track 112 to the desired height and boom height. Gripping bar 102, the front right gripper shoe 58a, front left grip Pas shoe 58b, rear right gripper shoe 62a and the rear left gripper shoe 62b is
The front right gripper cylinder 56a, the front left gripper cylinder 56b, the rear right gripper cylinder 60a, and the rear gripper cylinder 60b extend to move so as to contact the tunnel wall. At this time, the boom support sheet catcher off <br/> preparative 34 in the retracted position.

In the tunnel process (excavation process), the plunger
It is started by the extension of the cylinder 76. For example, almost
It is preferable to dig 0.5 to 1 inch, but the actual progress
The depth depends on the condition of the bedrock. Then the boom support system
AThe hood 34, boom 20 and cutter wheel 12 are forward
Proceed to. To excavate the horizontal part of the tunnel surface
Transverse housing 46 (for excavating the tunnel floor)
Is on the horizontal plane above the frontal crossing 52 and the rear crossing 54.
Then, move to the left side of the mobile excavating machine 10, for example,
When the cutter wheel 12 is
Facing down. As mentioned earlier, the front traverse motor
68 and rear crossing motor 72WhatDriven sideways
By the cutting screw 64 and the rear crossing screw 66.What
Thus, the transverse housing 46 performs the relative movement described above. side
At the end of operation of the disconnect housing 46, the cutter wheel
The le 12 rotates on the boom yoke 26 and the cutter wheel
Is located outside of one side of the mobile drilling machine 10,
The excavation of the tunnel floor continues, and the tunnel floor and tons
Excavate the tunnel corner at the intersection with the flannel wall. Furthermore
In order to excavate this corner, the boom 20
According toWhatDriven by the cutter wheel 12
It is directed downwards towards the corner of the tunnel. Boom siri
When the commander 30 is further driven,WhatBoom 20
The upper cutter wheel 12 moves backward and excavates the tunnel corner.
Complete the shaving. Cutter wheel after corner excavation is finished
12 rotates around the boom yoke 26, for example, clockwise.
While taking the arcuate course above the mobile drilling machine 10,
While moving. During the operation of such an orphanage course,
The ta-wheel 12 excavates and forms a non-crown roof
It is possible to selectively move horizontally in order to
It This arcuate passage is created by forming a tunnel wall
finish. Next, the tunnel corner on the other side was excavated,
The cutter wheel 12 and boom 20 are transverse housings
By moving 46 in the horizontal direction,
Move to (left) again. Then, on the other tunnel surface
Drilling progresses in the opposite direction (right) or in the opposite arcuate direction (counter)
(Clockwise).

[0036] The plunger cylinder after excavation is completed for each tunnel surfaces, again stretched rock tunnel face boom support sheet catcher shift 34, the boom 20 and the cutter wheel 12,
The tunnel surface is excavated again. This procedure is repeated until the plunger cylinder 76 has completed the entire process, preferably about 6 inches to about 8 inches. Gripping bar 102, the front right gripper cylinder 56a, front left Gurippashi Li Sunda 56b, rear right gripper cylinder 60a,
It is released by retracting the rear left gripper cylinder 60. Since the screw-di catcher Tsu key 104 is withdrawn from the tunnel floor, mobile excavating machine 10 is lowered onto the track 112. Then, since the plunger cylinder 76 is retracted, the boom support sheet catcher shift 34,
The boom 20 and the cutter wheel 12 are retracted.
The track 112 is used to reset the location of the mobile drilling machine 10 for another drilling process or move it elsewhere. The excavation process described above is then repeated. Fragments generated during drilling is received in fragments blade 116 is collected Tsu by the inner portion 118 to the debris collection truck.

[0037] Figure 8 shows the shape and size of the smallest tunnel 144 and maximum tunnel 146 is drilled by the mobile excavation machine 10. Tunnel 148 is a typical tunnel having a size intermediate between minimum tunnel 144 and maximum tunnel 146. However, the mobile drilling machine 10
It is clear that can be excavated in any shape and size of intermediate size between the smallest tunnel 144 and the largest tunnel 146. The size of the minimum tunnel 144 is one that the mobile excavating machine 10 can pass through. Therefore, the shape and size of the minimum tunnel 144 is determined according to the size of the mobile excavating machine 10.

The shape of the maximum tunnel 146 is such that the roof crown of the tunnel does not need to have an arc, with a small height to width ratio. The height of the maximum tunnel 146 is a function of the length of the boom 120 and the maximum extension angle of the boom 20. This extension angle is preferably about 45 degrees.
The width of the maximum tunnel 146 is a function of the length of horizontal movement of the transverse housing 46 and the maximum extension angle of the pitch boom 20 when the cutter wheel 12 is vertical. The roof shape of the largest tunnel 146 is a function of the horizontal movement of the transverse housing 46. Therefore, this roof shape is a function of the maximum angle of boom 20 when the axis of cutter wheel 12 is horizontal. The sides of the largest tunnel 146 are not elliptical as in the use of pitch booms associated with swing booms, but are partial radii of circles because the cutter wheel 12 and boom 20 rotate on the boom yoke 26.

As mentioned above, the maximum tunnel 146 having a small height to width ratio is excavated by the mobile excavating machine 10 having a selective traverse assembly . If there is no transverse movement (horizontal movement) of the mobile excavating machine 10, a maximum tunnel (not shown) of approximately equal height to width ratio is obtained. Above embodiments described are not limiting Te <br/> Tsu der those described illustratively. The full scope of the invention is set forth in the claims, and all equivalents are included in the scope of the claims.

[0040]

As described above, according to the present invention, according to the present invention, mobile drilling machines such as having a cutter head which is conveyed Tsu by the boom assembly <br/> the cutter head and boom step crosses selectively To enable tunnel cutting with a low height-to-width ratio or approximately equal to a height-to-width ratio of 1 and optionally without a roof crown. There is also provided a mobile excavating machine having a cutter head which can be operated such that the rotation axis of the cutter head is substantially parallel to the tunnel processing surface so that the lower corner of the tunnel can be cut more efficiently. In addition, since a mobile excavating machine having a gantry frame occupying almost no internal components is realized, the gantry configuration allows workers and mining support vehicles to work freely below the mobile excavating machine. It will be possible.

[Brief description of drawings]

FIG. 1 is a side view of a mobile excavating machine of the present invention, partially in cross section.

FIG. 2 is a plan view, partially in section, of the mobile excavating machine shown in FIG.

3 is a rear view of the mobile excavating machine shown in FIG. 1. FIG.

4 is a transverse housing of the mobile excavating machine shown in FIG. 1,
It is a partial perspective view which shows a crossing path and a gantry frame.

5 is a transverse housing of the mobile excavating machine shown in FIG. 1,
It is a partial perspective view which shows a crossing, a gantry frame, and a track.

FIG. 6 is an enlarged partial sectional view showing a pitch boom, a boom yoke, and a boom support shaft of the mobile excavating machine shown in FIG.

7 is an enlarged partial cross-sectional view showing a housing, a boom support shaft, and a plunger cylinder of the mobile excavating machine shown in FIG.

FIG. 8 is a cross-sectional view showing a maximum tunnel, a minimum tunnel and a typical tunnel cut by the mobile excavating machine shown in FIG.

[Explanation of symbols]

10 Mobile excavator 12 cutter wheels 14 Horizontal / horizontal axis drum 16 disk cutter 20 boom 26 Boom yoke 30 boom cylinder 34 Boom support shaft 38 ring gear 40 flange 42 Boom rotation motor 46 transverse housing 52 Front crossing 54 Rear crossing 56 Front gripper cylinder 58 Front gripper shoe 60 Rear gripper cylinder 62 Rear gripper shoe 64 Front transverse screw 66 Rear crossing screw 68 Front traverse motor 72 Rear crossing motor 76 Plunge cylinder 78 External sleeve 80 Internal piston 82 Implant bolt 86 Thrust plate 90 crawler beam 94 cross beam 96 frame corner 98 Sync Chain 100 grip arm trunnion 102 grip arm 104 screw jack 106 screw shaft 108 pad 112 Infinite start 118 Inner part 120 shredder shield 124 Scrubber duct 126 Scrubber 128 rear duct 130 crushed piece curtain 132 Rear platform 136 hydraulic power unit 138 electrical cabinet 140 dizel generator 142 working area 144 the smallest tunnel 146 maximum tunnel

─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor John Turner Washington, USA 98056, Renton, North East Apartment 204, Sunset Boulevard 1100 (72) Inventor Nail Jay. Damen, Washington 98117, Seattle, USA, 35th Avenue Northwest, 6735 (56) References JP-A-62-146397 (JP, A) JP-A-48-78708 (JP, A) Jitsukaihei 5-22963 (JP) , U) Japanese Patent Publication No. 46-35542 (JP, B1) Japanese Patent Publication No. 50-22963 (JP, B1) US Patent 4838615 (US, A) US Patent 4544443 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 9/10 E21D 23/00

Claims (9)

(57) [Claims] 1. A cutter wheel boom assembly for pivotal movement is supported, the cutter wheel, during the swinging movement along the tunnel processing surface, Ho tunnel processing surface Isuzu be rotated around an axis parallel Excavating a tunnel in bedrock
In a mobile excavating machine, the state of being able to pivot about an axis perpendicular to the direction of excavation
And a mounting portion that supports the boom assembly, and a state in which the boom assembly can be rotated about an axis parallel to the traveling direction.
The rotating assembly that supports the mounting portion and the rotating assembly that is movable in a direction parallel to the excavation advancing direction.
A transverse assembly supporting the assembly, the transverse assembly being oriented in a direction parallel to the direction of excavation
On the other hand, relatively pushing the rotation assembly forward or
Pushing back and forth, a frame supporting the transverse assembly , and the tunnel during the pushing operation by the pushing means.
Holding means for keeping the frame stationary within the tool, and provided on the frame to support the excavator during movement.
Transporting means for supporting the frame, wherein the transverse assembly includes the rotating assembly relative to the frame.
A traverse mechanism that moves in the lateral direction orthogonal to the direction of excavation
A gantry-type mobile excavating machine characterized by being provided . 2. The cutter wheel has a plurality of rollers on its outer circumference.
-Wheel-shaped cutter wheel equipped with la cutter unit
The gantry-type mobile excavating machine according to claim 1, wherein 3. The mounting is coaxial with the rotation axis of the mounting portion.
The ring gear fixed to the gear and the rotation assembly
Rotate the ring gear to rotate the mounting part.
The motor according to claim 1 or a contractor.
The gantry-type mobile excavating machine according to claim 2. Wherein said transverse assembly supports a front transverse channel extending transversely fixed to the frame, and the surface cross-passage after extending transversely fixed to the frame, the rotating assembly Along with the front crossing path and the rear crossing path , it is slidably mounted in the transverse direction.
Is in, this comprises a transverse housing, a transverse movement drive means for traversing movement of the front transverse housing along said front transverse passage and rear transverse path, the interconnecting said rear cross path and the front transverse channel
The method according to any one of claims 1 to 3, characterized in that
Gantry-type mobile drilling machine. 5. The transverse movement drive means includes a front transverse screw screwed to the transverse housing and axially oriented in the transverse direction, and a rear transverse screw screwed to the transverse housing and axially oriented in the transverse direction , gantry type mobile drilling machine according to claim 4 and a <br/> motor for rotating the front transverse screw and the rear transverse screw to effect a transverse movement of said transverse housing. Wherein said holding means is mounted for raising and lowering the mobile excavating machine, and di Yakki <br/> means liftable the frame provided in the frame, rotatably to the frame a gripping bar which is a gripper shoe provided on the grip arm, is fixed coaxially to said front transverse passage and rear transverse passage
With telescopic tip is attached to the gripping arm of the Gurippashu over the near neighbor, intends rows transverse movement of said gripping arm and said gripper shoe against the frame
Claims, characterized in that it comprises a grip cylinder, the
The gantry type mobile excavating machine according to claim 4 or claim 5 . 7. Before SL frame in order to form a space having a surface opening after passing the machine for workers and associated with front opening for passing the crushed pieces below the mobile excavating machine, first a side frame portion, the second side frame portion, and a top frame portion that connects the second side frame portion and the first side frame portion
The gantry type mobile excavating machine according to any one of claims 1 to 6 . 8. Furthermore, attached to the front frame
And fragments blade assembly Tsu der claim having a configured fragments blade assembly to guide through the front opening of the debris in the space formed by Tsu by the frame <br/> gantry type mobile drilling machine according to 7. 9. A pre-Symbol first fragments blade attached to the first side frame portion, it consists second fragments blades mounted on said second frame side portions, the said first fragments blade first for each of the two fragments blades, guides the debris through the front opening of the space formed by Tsu by the frame, the two crushing
One blade has an angle with the longitudinal axis of the mobile excavator.
Gantry type mobile drilling machine according to claim 7 arranged Tsu characterized Rukoto.